:root {
  color-scheme: light;
  --bg: #f7f4ee;
  --paper: #fffdf8;
  --ink: #202124;
  --muted: #65605a;
  --line: #ded6c8;
  --accent: #2f7d7b;
  --accent-dark: #1f5e5c;
  --warn: #9b4d32;
  --shadow: 0 18px 48px rgba(42, 38, 32, 0.12);
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.8;
}

a {
  color: var(--accent-dark);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.site-header,
.site-footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  color: inherit;
  font-weight: 700;
  text-decoration: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.95rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent-dark);
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
}

.hero,
.section,
.notice {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero {
  padding: clamp(28px, 6vw, 56px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 0.92rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.35;
  letter-spacing: 0;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(2rem, 9vw, 3.4rem);
}

h2 {
  margin: 0 0 14px;
  font-size: 1.45rem;
}

h3 {
  margin: 24px 0 8px;
  font-size: 1.08rem;
}

p {
  margin: 0 0 1em;
}

.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.08rem;
}

.actions,
.link-list {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.actions {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.button-link,
.link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 54px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.button-link:hover,
.link-item:hover {
  border-color: var(--accent);
}

.section {
  margin-top: 22px;
  padding: clamp(22px, 5vw, 36px);
}

.section ul,
.section ol {
  padding-left: 1.4rem;
}

.section li + li {
  margin-top: 0.45em;
}

.notice {
  margin-top: 22px;
  padding: 18px 20px;
  border-color: #d6b6a8;
  color: var(--warn);
  box-shadow: none;
}

.meta {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer {
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 680px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    gap: 10px 14px;
  }
}